<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.2.2/css/bootstrap.min.css">
</head>
<body>
<form action="/login" method="post">
    <div class="mb-3">
        <label for="exampleInputEmail" class="form-label">用户名</label>
        <input type="text" class="form-control" id="exampleInputEmail" name="username">
    </div>
    <div class="mb-3">
        <label for="exampleInputPassword1" class="form-label">密码</label>
        <input type="password" class="form-control" id="exampleInputPassword1" name="password">
    </div>
    <button type="submit" class="btn btn-primary">Submit</button>
</form>

</body>
</html>